//
//  AppDelegate.swift
//  微博
//
//  Created by 郭鉴增 on 2016/12/1.
//  Copyright © 2016年 郭鉴增. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        
        //监听切换跟视图控制器的通知
        NotificationCenter.default.addObserver(self, selector: #selector(switchRootVC(noti:)), name: NSNotification.Name(SwitchRootVCNotifationName), object: nil)
        
        //创建window
        window = UIWindow(frame: UIScreen.main.bounds)
        //创建跟视图控制器
        let rootVc = HMMainViewController()
        //设置跟视图控制器
        window?.rootViewController = rootVc
        //设置主window并显示
        window?.makeKeyAndVisible()
        
        
        return true
    }
    //监听切换跟视图控制器的通知方法
    @objc private func switchRootVC(noti: Notification) {
        
        let obj = noti.object as? UIViewController
        //判断传入过来的参数是否为指定的类型,如果oauth视图控制器,那么进入欢迎页面,否则进入首页
        if obj is HMOAuthViewController {
            
            window?.rootViewController = HMWelcomeViewController()
        } else {
            window?.rootViewController = HMMainViewController()
        }
        
    }
    //标准谢法,注册通知和移除通知必须成对
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
    
    func applicationWillResignActive(_ application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(_ application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(_ application: UIApplication) {
        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(_ application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }


}

